加拿大的巴肯组成藏层带

在美国北达科他州西部地区，石油公司已经在积极地通过钻水平井勘探开发巴肯组油藏，而在加拿大的萨斯喀切温省，石油公司也在做着同样的事情。这两个国家的石油公司都在致力于勘探开发广阔的威利斯顿盆地巴肯组中段的油藏。这个盆地有三分之一分布在加拿大，而四分之一分布在萨斯喀切温省。     

Delaying Modified QUICK Scheme and its Application in Slug Flow

IntroductionGas-liquid flow in pipes may aPPear in variousconfigUrations detennined by the spatial distribution ofthe twO Phase in the pipes. These coal~ons aretermed as flow patterns. Slug flow eaistS over a broadrange of gas and liquid flow rates and is encountered in awide vallely of industrial aPPlications.lh venical slug flow, most of thp gas is located inlarge bullet{shaped bubbles, the so called Taylor bubbles,Which occupy most of the pipe cross section. The liquidconfined betWeen …     

储量定义能有一套通用标准吗？

多年来，寻找一套全世界统一的储量定义一直是没气工业界回避的目标。本讨论了使油气工业界在储量定义方面分化为“确定性”和“概率”两个阵营的一些历史及技术问题。同时回顾了SPE（石油工程师协会）为使其储量定义成为世界标准所作的努力，总结了其成员的反馈意见。最后展望未来并就如何得出一套世界通用的储量定义提出了自己的一些看法。     

VB和MATLAB在液压CAD中的应用

在分析MATLAB和VB开发语言各自优缺点的基础上,通过阐述和使用ActiveX automation技术,实现了MATLAB和VB的数据交换与集成开发,二者的优点使液压CAD软件开发变得更加简洁、高效.     

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

This study aims to investigate hydrofracturing in double-layered soil through theoretical and experimental analysis, as multilayered soils where the difference in mechanical properties exists are generally encountered in practical engineering. First, an analytical solution for fracturing pressure in two different concentric regions of soil was presented based on the cavity expansion theory. Then, several triaxial hydraulic fracturing tests were carried out to validate the analytical solution. The comparison between the experimental and analytical results indicates the remarkable accuracy of the derived formula, and the following conclusions were also obtained. First, there is a linear relationship between the fracturing pressure and confining pressure in concentric double-layered cohesive soil. Second, when the internal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturing pressure approximately brings the weakening effect, and the greater strength distinction between the two layers, the greater the weakening effect. Third, when the internal-layer soil is harder than the external-layer soil, the existence of the internal-layer soil has a strengthening effect on the fracturing pressure regardless of the proportion of internal-layer soil. Moreover, the influence of strength distinction between the two layers on the fracturing pressure is significant when the proportion of internal-layer soil is less than half, while it’s limited when the proportion is more than half. The proposed solution is potentially useful for geotechnical problems involving aspects of cohesive soil layering in a composite formation.     

硬岩应力–应变门槛值特点及产生机制

详细总结岩石应力门槛值(起裂强度ci?、损伤强度cd?和峰值强度f?)的物理意义和计算方法,以花岗岩和大理岩为研究对象进行不同围压的常规三轴试验,计算分析ci?,cd?和f?值,以及各个门槛值对应的轴向应变、侧向应变和体积应变的变化规律,重点讨论轴向应变和侧向应变的特点和产生机制,分析结果发现:花岗岩的cc?/f?,ci?/f?,cd?/f?分别位于0.10~0.19,0.40~0.59,0.77~0.82区间内,大理岩相应的应力比位于0.10~0.25,0.47~0.64,0.82~0.92内,不同岩石或相同岩石门槛值应力比的差异可能由于矿物成分、赋存环境、开挖损伤造成;2种岩石应力门槛值及各自对应的轴向应变随围压近似呈线性递增,并且应力和轴向应变随围压的变化曲线非常相似;侧向应变在达到cd?之前增长缓慢,在达到cd?之后急剧增加,而轴向应变在整个加载过程稳步增加;围压、cd?和对应的损伤体积应变存在内在关联性,相互关系可用线性或二项式拟合。     

Blue LED growth from 2 inch to 8 inch

Growth of blue InGaN based LED structures on sapphire wafers from 2 inch to 8 inch in diameter was investigated using the Veeco K465 MOCVD platform. Our results indicate that the same pressure,rotation rate and hydride flows can be used for all wafer sizes. AFM and X-ray studies reveal that all wafer sizes have comparable high-quality crystallinity and defect levels for GaN and InGaN/GaN MQW growth. Although the larger diameter wafers exhibit larger wafer bow due to lattice and thermal mismatch,with proper ...     

Dual Radial-Resonant Wide Beamwidth Circular Sector Microstrip Patch Antennas

In this article, a design approach to a radial-resonant wide beamwidth circular sector patch antenna is advanced. As properly evolved from a U-shaped d ipole, a prototype magnetic dipole can be fit in the radial direction of a circular sector patch radiator, with its length set as the positive odd-integer multiples of onequarter wavelength. In this way, multiple TM_0m(m = 1,2,...) modes resonant circular sector patch antenna with short-circuited circumference and widened E-plane beamwi...     

微地震油藏监测

与反射地震成像相比，微地震监测接近天然地震学，它能够观测到采用其它方法观测不到的油藏变化产生的反映油藏构造和流体通道的地震信号。文中简要介绍了微地震监测的历史和在储层成像中应用的理论基础，以及采集、处理和应用方法。